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Results of testing of material properties of the product
Property Requirement Result
Tensile strength (MPa): machine direction Min. 12 25
transverse direction Min. 8 22
Elongation (%): machine direction 225 711
transverse direction 350 658
Water vapour permeance (ng/(Pa·s·m2)) Max. 15 0.61
Impact strength (g) Min. 300 2 600
Outdoor weathering resistance Retain minimum 50% of tensile elongation strength after exposure to accelerated weathering Pass
Results of testing for comparison of radon infiltration through "Radon Guard™" and prescriptive gravel
Assembly Rn Concentration in Dosing Compartment (Bq/m3) Rn Concentration in Receiving Compartment (Bq/m3) Result
Floor assembly with 6 mil poly 5 192 342 The test assembly with the RadonBlock™ and butyl joint tape demonstrated lower permeability to Rn compared to the floor assemblies with the 6 mil poly or the 20 mil poly membranes with conventional sheathing joint tape
Floor assembly with 20 mil poly 2 260 384
Floor assembly with "RadonBlock™" 3 362 124
Comparison of sub-slab depressurization communication for membrane tests
Assembly Flow Rate Through Exhaust Fan (L/s) Pressure Under Concrete Slab (Pa) Pressure Under Membrane (Pa) Pressure in Dosing Compartment (Pa) Pressure in Receiving Compartment (Pa) Result
Floor assembly with 6 mil poly 26.6 −1.8 −3.1 −30.0 −0.9 "RadonBlock™" 6 mil poly and 20 mil poly membranes produced comparable results during the sub-slab pressure communication tests
Floor assembly with 20 mil poly 25.2 −3.0 −3.0 −29.4 −4.4
Floor assembly with "RadonBlock™" 28.9 −0.6 −3.1 −29.8 −2.3